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Investigators released a sketch of what they believe the child looked like Thursday.

"She is a beautiful young child who deserves dignity," Conley said.

Investigators said she was about 4 years old with brown eyes and brown hair that was about 14 inches long. They said the girl was about 3½ feet tall and weighed just over 30 pounds, which was normal for her height.

She was most likely Caucasian or Hispanic, Conley said.

Conley said the girl was wearing black and white polka-dot leggings that were manufactured by Circo, a brand sold at Target. She was wrapped in a black and white zebra-print fleece blanket.

The cause of death has not been determined.

Investigators are reviewing reports of missing children and have notified police across the country.

Some people have offered to help pay for burial expenses, Conley said.